First time user/developer question about API key purchase

On the page that allows you to sign up / purchase your API key it says at the bottom that for a developer +History is not included. It stays set to that no matter which level I select. However upon looking at the questions in the forum it appears that some history API access is readily available. I am mainly interested in local history data. Would someone please explain what they mean by 'Not Included" ? Are they talking about a pure one time history dump ?Thanks !